Air quality index [µg/m3]:
excellent ≤ 20
good ≤ 60
lightly polluted ≤ 100
moderately polluted ≤ 140
heavily polluted ≤ 200
severely polluted > 200
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
140077lightly pollutedexcellent111excellent
130065lightly pollutedexcellent101excellent
120053goodexcellent71excellent
110043goodexcellent51excellent
100040goodexcellent31excellent
090044goodexcellent71excellent
080066lightly pollutedexcellent71excellent
070062lightly pollutedexcellent71excellent
060052goodexcellent61excellent
050055goodexcellent51excellent
040048goodexcellent51excellent
030053goodexcellent61excellent
020050goodexcellent51excellent
010044goodexcellent41excellent
000024goodexcellent31excellent
230023goodexcellent31excellent
220014excellentexcellent21excellent
210010excellentexcellent21excellent
200013excellentexcellent41excellent
190014excellentexcellent31excellent
180011excellentexcellent21excellent
170010excellentexcellent11excellent
16007excellentexcellent11excellent
15006excellentexcellent11excellent